Important: Safety Warning
This page contains a formula or preparation using substances now known to be dangerously toxic, such as arsenic, mercury, lead, or cyanide compounds. Exposure to these substances can cause severe poisoning, permanent injury, or death.
In addition, this page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
Home › The Art Of Dyeing › Sky Blue Dye for Silks
Sky Blue Dye for Silks
For 5 pounds of silk goods, add to a sufficient quantity of water to work the goods pint of nitrate of iron; work in this for 20 minutes, then wash out in cold water. Into another vessel of cold water add 3 ounces ferrocyanide of potassium in solution, and 1 fluid ounce of strong sulphuric acid; work through this for 10 minutes, then wash in cold water with 1 ounce of alum dissolved in it, and finish.